What size pump do I need?
The pump is one of the most important equipment purchases you will make for your water garden. It is the heart of the pond, circulating water to the filter and keeping the ecosystem healthy. Because it runs constantly, it must be both dependable and energy efficient. The pump you choose is based on the size of your pond and the pumping capacity in gallons per hour (gph). The pump should circulate the entire volume of the pond at least every hour. So, if you have a 1000-gallon pond, you need a pump that handles at least 1000 gph. When in doubt, you should purchase a slightly more powerful pump. You can always slow or divert the flow of a pump, but you can't increase it.
Click to see the Pump Selection Guide
We have many informational videos and articles related to pond pumps on our Pond Blog